- polarity changing relay board
- Телекоммуникации: плата реле переполюсовки
Универсальный англо-русский словарь. Академик.ру. 2011.
polarity changing relay board
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Relay — This article is about the electrical component. For other uses, see Relay (disambiguation). Automotive style miniature relay, dust cover is taken off A relay is an electrically operated switch. Many relays use an electromagnet to operate a… … Wikipedia
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